2018 Jeep Grand Cherokee Headlight Bulb Size

Low beam H11

High beam 9005

Order 2 × H11 + 2 × 9005

Low beam takes a H11 and high beam takes a 9005 — different bulbs, two of each. They are not interchangeable.

The 2011–2021 Grand Cherokee uses these same bulbs — your 2018 sits in the middle of that run. See all Grand Cherokee years.

2018 Jeep Grand Cherokee bulb chart

Position	Bulb	Notes
Low beam	`H11`	Two bulbs, one per side.
High beam	`9005`	Different bulb from low beam — not interchangeable.
Factory HID	`D3S`	Some Grand Cherokee trims came with factory HID. D3S is a gas-discharge socket — a halogen or LED bulb will not fit it.

Verified against factory service data and OEM bulb references.

These take the same low beam bulb, so the same bulb fits — only the housing differs.